In the 1860 US Census for Danbury, Fairfield County, Connecticut the family of Nathaniel Barnum was enumerated as follows:
Dwelling #277; Family #303
Nathaniel Barnum, 37, M, Master carpenter, Personal property $5,800, b. Connecticut
Susan Barnum, 32, F, b. Connecicut
Mary S. Barnum, 6, F, b. New York
Helen Sanderson, 23, F, Milliner, b. New York
Mary Doyle, 18, F, Servant, b. Ireland
Living next door, with the family of Ferris D. Ball, was:
Urana Barnum, 63, F, Hat trimmer, Real property $4,000, personal property $150, b. Connecticut
In the 1870 US Census for Danbury, Fairfield County, Connecticut the family of Nathaniel Barnum was enumerated as follows:
Dwelling #919; Family #1117
Barnum, Nathaniel; 47; M; W; Carpenter; b. Connecticut; Male citizen of US of 21 years of age and upwards
Barnum, Susan; 42; F; W; Keeping house; b. Connecticut
Barnum, Mary; 16; F; W; b. New York; Attended school within the year
Living next door, with the family of Ferris L. Ball, was:
Barnum, Lorania; 73; F; W; Works in hat factory; Real property $5,000; Personal property $500; b. Connecticut
In the 1880 US Census for District 113, Danbury, Fairfield County, Connecticut the family of Nathaniel Barnum was enumerated as follows:
Dwelling #795; Family #987
Barnum, Nathaniel; W; M; 56; Husband; Married; Picture dealer; b. Connecticut; Both parents b. Connecticut
Barnum, Susan; W; F; 50; Wife; Married; Keeping house; b. Connecticut; Both parents b. Connecticut
Myers, Mary; W; F; 25; Adopted; Single; Hat factory; b. New York; Both parents b. New York
Living in the same house, with the family of Ferris Ball, was:
Barnum, Euranie; W; F; 82; Mother-in-law; Widowed; Unemployed; b. Connecticut; Both parents b. Connecticut
Danbury, Connecticut Directories, 1885-90 about Nathaniel Barnum. Name: Nathaniel Barnum; Location 1: 240 Main; Location 2: 238 Main; Occupation: fancy and art goods; Year: 1885, 1886; City: Danbury; State: CT.
In the same directory in 1886-1887 he was listed as a picture framer. His business was listed on Main Street until at least 1890.